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My 88 does the same thing and it's the ignition switch. Try wiggling the key next time and see if it will keep running. I might ask if anyone knows if the switch can be accessed enough to allow a spray of WD 40 to hit it without dismantling?

88 4L BA10, Anyone know of a creative way to get a bit of lube in there to buy a bit of time? Put a new Throw out and slave in a while back and didn't even check the pilot, now it's periodically screaming at me for my negligence.

I am the second owner of this Comanche and have had it for 19 years now and have experienced minimum brake issues. During my ownership the proportioning valve rod [8"] has always seemed too long and the lever at no load stands between level and straight up. I estimate a rod of about 5" would make it level. The existing rod seems original but, of course, I can't be sure. Does anyone know the length of the original rod?

Don't forget to check the DPD {deathwobble prevention device}, otherwise known as the steering damper or stabilizer. That's what it's there for. Back in the day, a brand new Jeep would develop the shimmy if it was removed. I don't see its importance mentioned very often in this forum.

Be sure the weld above the pedal has not sheared.

Got a couple in Edgewater. An 88 Pioneer, Olympic, 6L, 4X4, and an 89 6L, rwd.

Yes I have. I was checking spark at the coil and noticed no spark while cranking but after releasing the key to the run position there was a spark or two just before the engine stopped turning. Then I realized I could start the thing if got my on off timing just right. Isn't there some system that is supposed to provide higher voltage to the coil when in starting mode?

Thought I would get my 89 4L parts Comanche going after a long sitting spell. After a new fuel pump it will only start [with luck] after releasing the key from start to run mode. What is supposed to provide spark while cranking? I assume there is relay of some sort which is not doing its part.

I had this same problem for years. Took the lock mechanism out and soaked it in kerosene overnite, reassembled the whole thing and little difference. The solution is, once you get the door opened, on the backside of the door next to the outdoor push to open button in the handle you will see a small plastic plug. Pop this out and lube generously with spray [WD40, etc}, exercise the lock outside and inside a number of times and presto, Fixed. Since I performed this fix, no more problems.

This describes exactly what my wife's 1999 XJ has done since we bought it 3 years ago. Otherwise it runs perfectly, so I have to assume that this situation could apply to other Cherokees as well. Thanks for the info.

I'm paying $3.15 a gallon here in New Smyrna Beach, Florida, not delivered, and that's the lowest in the area, I believe. Little too far to head your way for a fillup, sad to say. This is for home use by the way. I think it's well over $6.00 a gallon delivered. I feel like I'm being robbed.

I have a parts comanche I keep across the street which, until now, has been driveable but apparently someone recently siphoned the fuel tank dry. When I went to start it, after a few attempts, I noticed no sound from the pump and checked to find no fuel at the rail. When I realized what had happened, I put 5 gallons of gas in the critter but still the pump is not running. The pump circuit is energized as far as the connection to the pump at the tank. I am guessing the pump may be stuck or damaged from running dry. Any quick fix suggestions?

With 100K on the clock the sensor is due for replacement. The sensor on mine is a titania sensor which regulates the reference voltage. It's performance can be observed by connecting to ground and the output under the vehicle at the O2 connection. I am not sure which years may have had this type of sensor.

Several years ago I checked the O2 sensor on my 88, 4L, by back probing the sensor with a high impedance VOM. Keep in mind the comanche uses a reference signal, +- 5 volts to the O2 sensor which regulates output voltage to be read by the ECM. It does not generate a signal like most O2 sensors.

How do you dial back the amount of fuel ?